One of them is William Shatner in the jungle, one of them is the President of the USA. Ultimately, I think Locke needs to knife them both.

Everyone loves Charlie. He's just so... Charlie! I love that whole thing with him and Claire's diary, and that scene where Sawyer is pretending to read extracts from it: "Dear Diary, I'm getting really freaked out by that has-been pop star. I think he's stalking me [...] the little limey runt just won't let up."